目录
- 29.1. kvm install usage yum
-
- 29.1.1. brctl / tunctl
- 29.1.2. virt-install
- 29.2. Ubuntu
- 29.3. CentOS 6.2
- 29.4. Scientific Linux Virtualization
- 29.5. libvirt
-
- 29.5.1. virsh
-
- 29.5.1.1. console
- 29.5.1.2. dumpxml
- 29.5.2. Virtual Machine Manager
- 29.6. FAQ
-
- 29.6.1. No hypervisor options were found for this connection
- 29.6.2. 如何判断当前服务器是实体机还是虚拟机
http://wiki.centos.org/HowTos/KVM
29.1. kvm install usage yum
确认处理器是否支持KVM
egrep 'vmx|svm' /proc/cpuinfo
对当前系统做一个全面升级
sudo yum update sudo yum upgrade
Installing
如果你不想安装Virtualization组，想单独安装需要的软件，可是使用下面命令
# yum install qemu-kvm libvirt virt-install bridge-utils
确认kvm已经安装
lsmod | grep kvm# lsmod | grep kvm kvm_intel 138567 0 kvm 441119 1 kvm_intel
Create the disk image
qemu-img create -f qcow2 disk.img 5Gor
dd if=/dev/zero of=disk.img bs=1G count=5# qemu-img create -f qcow2 disk.img 5G Formatting 'disk.img', fmt=qcow2, size=5242880 kB # dd if=/dev/zero of=disk.img bs=1G count=5 5+0 records in 5+0 records out 5368709120 bytes (5.4 GB) copied, 61.0353 seconds, 88.0 MB/s
Creating a virtual machine
/usr/libexec/qemu-kvm -hda disk.img -cdrom archlinux-2009.08-core-x86_64.iso -m 512 -boot d
如果你不在localhost上安装OS,你需要指定vnc,这样你可以远程连接到kvm
[root@scientific ~]# /usr/libexec/qemu-kvm disk.img -cdrom rhel-server-5.6-x86_64-dvd.iso -m 8000 -boot d -vnc :1
[root@scientific ~]# yum install -y virt-manager virt-top virt-v2v virt-viewer or [root@scientific ~]# yum groupinstall 'Virtualization'
29.1.1. brctl / tunctl
[root@scientific ~]# yum install -y tunctl
DHCP
brctl addbr br0 ifconfig eth0 0.0.0.0 brctl addif br0 eth0 dhclient br0 tunctl -b -u root ifconfig tap0 up brctl addif br0 tap0
STATIC IP Address
brctl addbr br0 ifconfig eth0 0.0.0.0 brctl addif br0 eth0 ifconfig br0 up tunctl -b -u root ifconfig tap0 up brctl addif br0 tap0 ifconfig br0 192.168.1.120 netmask 255.255.255.0 up ip route add default via 192.168.3.1 dev br0
[root@scientific ~]# ip route
192.168.3.0/24 dev br0 proto kernel scope link src 192.168.3.43
192.168.3.0/24 dev tap0 proto kernel scope link src 192.168.3.21
default via 192.168.3.1 dev br0
[root@scientific ~]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.4ea7e4cf4633 no eth0
tap0
br06499 8000.000000000000 no
启动KVM
指定网络参数 -net nic -net tap,ifname=tap0,script=no/usr/libexec/qemu-kvm -hda disk.img -m 8000 -net nic -net tap,ifname=tap0,script=no -vnc :1 /usr/libexec/qemu-kvm -hda disk.img -m 8000 -net nic -net tap,ifname=tap0,script=no -nographic -daemonize
29.1.2. virt-install
yum install -y libvirt python-virtinst virt-manager
命令行安装
sudo virt-install --connect qemu:///system -n Ubuntu32 -r 512 --vcpus=1 -f /dev/sda3 -s 9 -c Desktop/ubuntu-10.10-desktop-i386.iso --vnc --noautoconsole --os-type linux --os-variant generic26 --accelerate --network=bridge:virbr0 --hvm sudo virt-install --connect qemu:///system -n Ubuntu32 -r 512 --vcpus=1 -f ~/ubuntu32.qcow2 -s 12 -c esktop/ubuntu-10.10-desktop-i386.iso --vnc --noautoconsole --os-type linux --os-variant generic26 --accelerate --network=bridge:br0 --hvm
进入GUI工具
virsh -c qemu:///system list sudo virt-manager
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原文出处：Netkiller 系列 手札
本文作者：陈景峯
转载请与作者联系，同时请务必标明文章原始出处和作者信息及本声明。
